The engine was not running and the key was off. At first the Check Engine light would come on when the gauge hit 1/2 full. I was able to clear the code , but it round come back. Now the highest it will read is half a tank. Sounds like the tank will have to be dropped and the sensor and or the fuel pump replaced. I’m hearing it is a unit.

Thanks. I do have the MPSS tires. Yes one does have to respect the capabilities of these high horse power cars. My previous Shelby was a SGT/SC with the Whipple 550 upgrade. I really like the black body color with the flat black stripes. A few years back I really considered a 2008 with that paint scheme.